JPS5927956Y2 - Knockout device for shaping press - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a knockout device for automatically kicking out a pressed product from a lower die onto a delivery conveyor.

A stamped product that has been shaped in a press shaping process or the like is pushed up by a knockout device and separated from a lower die.

However, the conventional knockout device has a structure in which it is only pushed upward by a knockout pin, so the knocked out product is simply released from the lower die and is transferred onto the delivery conveyor. The only way to transfer it is to use a manipulator or to do it manually, which is not desirable in terms of work efficiency.

Apart from this, there is a method of kicking out the stamped product from the lower die using a lever that rotates and swings, but this method has the disadvantage that if the stamped product has a complicated shape, it cannot be removed smoothly.

The purpose of the present invention is to provide a knockout device with an extremely simple structure that can perform two types of operations, ie, detachment from the lower mold and turning, to the stamped product in a step-by-step manner, and to provide a knockout device that is capable of performing two types of operations, ie, detachment from the lower die and rotation, to the stamped product in a step-by-step manner. This is because the inconveniences associated with seeding devices have been resolved.

The present invention includes a plurality of knockout plates disposed in vertical grooves of a lower mold, a knockout bar that pushes up the knockout plates from below, and a knockout bar that pushes up the knockout plates from below.
In the knockout device for a shaping press, the knockout device includes a drive mechanism for operating a bar, wherein an elongated hole extending in the vertical direction is formed at an end of the knockout plate, and a support attached to the lower mold is provided in the elongated hole. Through the pin, the knockout plate is guided by the support pin, moved up and down, and rotated about the support pin as a fulcrum.

Hereinafter, one embodiment of the knockout device of the present invention will be specifically described with reference to the drawings.

In a lower shaping mold 1 having a complex shape as shown in FIG. 1, knockout positions of the stamped product are determined at two locations, for example, and a vertical groove 11 is provided perpendicular to the axis of the stamped product, and a knockout plate 2 is fitted therein.

As shown in FIG. 2, this knockout plate 2 has a vertical swinging part that engages with the stamped product 6 as a swinging side and the other end as a pivoting side that is pivotally connected to the lower die 1 with a support pin 21. Although it is made into a movable upright plate, a longitudinally long elongated hole 22 is provided on the pivoting side and it is pivotally connected with a support pin 21. It is also possible to move upward, and after reaching the upper limit position, rotation and rocking around the support pin 21 can be performed.

A knockout bar 3 is provided below the knockout plate 2, penetrating through the bottom surface of the lower die 1.

The lower end of the knockout bar 3 is engaged with the swing end of a swing lever 51 of a cylinder 5 fixed to the press bed 4, and is moved up and down in the vertical direction by the operation of the cylinder 5. By this lifting and lowering operation, the swinging end of the knockout plate 2 can be pushed up from below, and the knockout plate can be given a lifting action and a turning and swinging action.

Next, the operation of this device will be explained.

When press forming is completed, the stamped product 6 is in the lower mold 2 and the knockout mechanism maintains the positional relationship shown in FIG. Then, the swing end of the swing lever 51 swings upward to give the knockout bar 3 a rising motion.

As a result, the knockout bar 3 vertically rises under the influence of the load of the stamped product 6, as shown by the dotted line in FIG. 3, and the stamped product 6 is separated from the lower die 1.

Even if the lower end of the elongated hole 22 of the knockout plate 2 engages with the support pin 21 and reaches its lifting limit, the knockout plate 2
Bar 3 continues its upward movement.

For this reason, the knockout plate 2 is turned and swung outward about the support pin 21, and the molded product 6 that has already been scooped onto the plate is rotated as shown by the arrow and transferred to a carry-out conveyor (not shown). Kick out to the top.

After the kickout, the cylinder 5 moves back and the knockout bar 3 is lowered, so the knockout plate 2
returns to the horizontal state and then descends to return to the knockout standby state shown in FIG.

According to the knockout device of the present invention, the knockout device is configured to lift the molded product after shaping in the vertical direction and then turn it to the side and kick it out. It is possible to automatically transfer shaped stamped products to the delivery line smoothly.

Furthermore, since the configuration of the device is extremely simple, it can be installed at low installation cost and is easy to maintain.

[Brief explanation of the drawing]

FIG. 1 is a top view of a lower mold equipped with the knockout device of the present invention. FIG. 2 is a sectional view taken along line II--II in FIG. 1. FIG. 3 is an explanatory diagram showing the operation and form of main parts. 1: Lower mold, 2
: Knockout plate, 3: Knockout bar,
4 Nibless bed, 5 Nijilinda, 6: Stamped product, 11:
Vertical groove, 21: Support pin, 22: Long hole, 51: Swing lever.

Claims (1)

[Scope of utility model registration request] In a knockout device for a shaping press, the knockout device includes a plurality of knockout plates arranged in a vertical groove of a lower mold, a knockout bar that pushes up the knockout plates from below, and a drive mechanism that operates the knockout bar. , an end of the knockout plate is formed with a long hole extending in the vertical direction, a support pin attached to the lower die is passed through the long hole, and the knockout plate is guided by the support pin. A knockout device for a shaping press characterized by a structure in which the press is moved up and down and rotated using its support pin as a fulcrum.